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[CPU] - skip some operations that cost precious time in mutex lock/unlock that are called frequently for some gains when not debugging

This commit is contained in:
Cancerous 2020-01-27 06:51:34 -05:00 committed by illusion
parent b2c37c26ce
commit 99ff1c9b19
1 changed files with 9 additions and 3 deletions
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12
src/xenia/cpu/ppc/ppc_frontend.cc
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@ -55,26 +55,32 @@ Memory* PPCFrontend::memory() const { return processor_->memory(); }
// Checks the state of the global lock and sets scratch to the current MSR
// value.
void CheckGlobalLock(PPCContext* ppc_context, void* arg0, void* arg1) {
auto global_mutex = reinterpret_cast<std::recursive_mutex*>(arg0);
auto global_lock_count = reinterpret_cast<int32_t*>(arg1);
std::lock_guard<std::recursive_mutex> lock(*global_mutex);
#ifdef _DEBUG
auto global_mutex = reinterpret_cast<std::recursive_mutex*>(arg0);
std::lock_guard<std::recursive_mutex> lock(*global_mutex);
#endif
ppc_context->scratch = *global_lock_count ? 0 : 0x8000;
}
// Enters the global lock. Safe to recursion.
void EnterGlobalLock(PPCContext* ppc_context, void* arg0, void* arg1) {
auto global_mutex = reinterpret_cast<std::recursive_mutex*>(arg0);
#ifdef _DEBUG
auto global_lock_count = reinterpret_cast<int32_t*>(arg1);
global_mutex->lock();
xe::atomic_inc(global_lock_count);
#endif
global_mutex->lock();
}
// Leaves the global lock. Safe to recursion.
void LeaveGlobalLock(PPCContext* ppc_context, void* arg0, void* arg1) {
auto global_mutex = reinterpret_cast<std::recursive_mutex*>(arg0);
#ifdef _DEBUG
auto global_lock_count = reinterpret_cast<int32_t*>(arg1);
auto new_lock_count = xe::atomic_dec(global_lock_count);
assert_true(new_lock_count >= 0);
#endif
global_mutex->unlock();
}